The man accused of storming the White House Correspondents’ Association dinner and trying to kill US President Donald Trump took a photo of himself minutes before the attack, showing him armed with an ammunition bag, a shoulder gun holster and a sheathed knife, according to new court filings presented by prosecutors.The suspect, identified as Cole Allen, 31, of California, is accused of attempting to breach security Saturday night at the Washington Hilton, where the annual media event was underway and President Trump was present along with hundreds of reporters and officials.Authorities said Allen was wearing black pants, a black shirt and a red tie when the photo was taken in his hotel room at the same location. According to the Associated Press, he had checked into the Washington Hilton a day earlier after traveling by train across the country from California and had reportedly reserved his room weeks in advance.Prosecutors said Allen repeatedly monitored online updates tracking the president’s movements on the night of the incident, including live coverage of Trump’s arrival at the hotel. Investigators also found evidence of pre-planned emails titled ‘Apology and Explanation’, which were allegedly scheduled to be sent around 8.30 pm.“He intended to kill and fired his firearm while attempting to breach security and attack his target. Simply put, if the defendant is released pending trial, he poses an unusually grave danger to the community,” Assistant U.S. Attorney Charles Jones wrote in the filing.Authorities allege that Allen attempted to cross security barricades near the ballroom entrance, prompting a shootout with Secret Service agents assigned to protect the event. A Secret Service officer wearing a bullet-resistant vest was shot but survived.President Trump was not injured but security personnel escorted him out of the venue. The guests inside the ballroom were forced to take cover due to gunfire and the event was later cancelled.Court documents also said Allen had reserved a room at the Washington Hilton on April 6, before the event, suggesting the attack may have been planned over several weeks.Prosecutors further said Allen had sent a message to family members shortly before the incident in which he described himself as a ‘friendly federal killer’ and referenced complaints involving the Trump administration. Allen was arrested after being subdued by security forces and appeared in court on Monday, where he was formally charged with attempted assassination of the President as well as transportation of firearms and ammunition across state borders and discharging a firearm during the commission of a violent crime. He did not file any petition.His legal counsel found that he had no prior criminal record and he was considered innocent. However, prosecutors argued that he should remain in custody due to the seriousness of the alleged attack.Trump later described the suspect as a ‘lone wolf’ and a ‘very troubled’ individual, and said such incidents often occur when public figures are highly visible.